Tiff Wang contributed to the aws/amazon-ecs-ami repository by delivering two features focused on infrastructure as code and documentation. She updated the AMI build process by bumping the default ECS agent version to 1.88.0 in the variables.pkr.hcl file, ensuring that all new AMIs include the latest agent enhancements and security updates. Tiff also authored comprehensive release notes in Markdown, detailing the introduction of new AMI versions for Amazon Linux 2 and Amazon Linux 2023, as well as integrating the Fault Injection Service to improve system resilience. Her work demonstrated depth in HCL and infrastructure automation practices.